When working on a new build, renovation, extension, or installing an underfloor heating system, people often consider applying self levelling compounds or liquid screed. Both are used to create a smooth, level surface in preparation for the final floor covering, but they differ in scale, application depth, and purpose. You may be unsure which option to choose, but by better understanding what they are and their intended use, you can make the right choice for a long lasting and high quality flooring finish. In this post, we explore more about self levelling compounds and liquid screed helping to decide which option is ideal for the needs of your project.
Understanding Self Levelling Compounds and Liquid Screed in Floor Preparation
Both self levelling compounds and liquid screed are key solutions for preparing a subfloor before a final floor covering is laid. Homeowners, developers, or contractors utilise them to create an even, consistent surface, but it’s important to choose the option that best meets the needs of the project.
While both materials are used in floor preparation, they differ in how and where they are applied – with factors such as the scale of the work, the condition of the subfloor, and the flooring type all influencing the most suitable choice. Below, we explain more about both self levelling compounds and liquid screed, including what they are and when each should be used.
What is a Self Levelling Compound?
A self levelling compound is a cement based mixture that is designed to create a smooth, flat surface by naturally flowing and settling into place once poured. It contains polymers and other additives that allow it to spread out evenly without the need for extensive trowelling. Applied in thin layers – usually just a few millimetres thick – it is used to correct minor surface irregularities. Once set, it forms a solid, level base suitable for the installation of various floor coverings.
When Should You Use a Self Levelling Compound?
Self-levelling compounds are commonly used in small scale renovations, domestic projects, or when preparing floors for coverings such as vinyl, laminate, or tile. They are ideal for correcting minor dips, uneven areas, or rough patches in existing floors, helping to create a smooth, level surface. This solution is most often chosen when the underlying structure is stable and structurally intact, but the top layer simply needs refining to ensure a high quality finish for the final flooring.
What is Liquid Floor Screed?
Liquid screed is a free flowing, cement or calcium sulphate based material used to create a full, structural subfloor layer. Unlike traditional screeds, it is poured in a liquid state, allowing it to flow easily and settle into a smooth, level finish with minimal manual effort. It is typically applied at depths of 35-50mm and is often used over insulation or underfloor heating systems. When it is cured, it forms a strong, durable base ready for final floor coverings.
When Should You Use Liquid Screed?
Liquid screed is most commonly used for larger building projects, such as when you’re constructing a new property, carrying out a full renovation, or adding an extension. This is because it creates a strong, level base over large areas, which is essential for supporting the weight of the final floor covering. It’s also especially effective when used with underfloor heating systems, due to its excellent thermal conductivity and ability to flow easily around pipes.
Which One Should Be Used on a Flooring Project?
Choosing between self levelling compound and liquid screed entirely depends on the scale of the project, the state of the current subfloor, and the type of flooring you’re having installed. Below, we break down the key factors to consider when deciding between the two options:
- Scale of Project – For smaller scale renovations, such as updating a single room or smoothing a floor before laying new flooring, a self levelling compound is usually the best option. For larger projects like new builds, full renovations, or extensions, liquid screed offers better coverage and long term structural support.
- State of Current Subfloor – If your existing subfloor is structurally stable but has minor imperfections or dips, a self levelling compound can correct these quickly and cost effectively. However, if the surface is uneven or you’re starting from scratch, liquid screed provides a full, durable base for long term use.
- Type of Flooring Being Installed – Certain flooring types, such as vinyl, laminate, or carpet, need a perfectly smooth surface, which a self levelling compound can provide. For heavier materials like tile or areas with underfloor heating, liquid screed is better suited due to its strength and thermal conductivity.
If you’re unsure which option is best for your needs, contact a floor preparation specialist like K M Flow Screed, and our team can help you choose the best solution for your specific requirements.
Looking for Self Levelling Compound or Liquid Screed Application in Newbury?
If you are looking to have either self levelling compound or liquid screed applied in Newbury, why not utilise K M Flow Screed’s professional floor preparation services? We specialise in the application of both self levelling compound and liquid screed, enabling you to choose the right subfloor solution for your home, business, or work project. We work with clients throughout Berkshire, as well as the surrounding areas, always ensuring the highest standard of results at competitive prices.
Get in touch with K M Flow Screed today to learn more about self levelling compound and liquid screed applications in Newbury. Simply fill out our online enquiry form, and we’ll get back to you shortly, call 07882 149552 or 07701 306481, or email kmflowscreed@yahoo.com.